Polarity protection
Polarity protection circuit schematic
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about 1 year ago - 1,662 comments
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about 1 year ago - 2,357 comments
In three-phase applications, if low voltage is available in any one or two phases, and you want your equipment to work on normal voltage, this circuit will solve your problem. However, a proper-rating fuse needs to be used in the input lines (R, Y and B) of each phase. The circuit provides correct voltage in…
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At night when power fails, one finds it difficult to reach the generator to start it. Here is the circuit for a generator room light that automatically turns on at night, facilitating easy access to the generator. During daytime, the light remains off. Fig. 1 shows the circuit for generator room light, while Fig. 2 shows…
Inverter overload protector with delayed auto reset
about 1 year ago - 672 comments
The circuit presented here is an overload detector which shuts down the inverter in an overload condition. It has the following desirable features: It shuts down the inverter and also provides audio-visual indication of the overload condition. After shutdown, it automatically restarts the inverter with a delay of 6 seconds. Thus, it saves the user…
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about 1 year ago - 1,710 comments
The objective of the circuit is to create a power supply that would produce an output of 0 V to 15 V at 1 A current. Terminology 2N3055 – a complementary Silicon Epitaxial-Base planar NPN transistor mounted in Jedec TO-3 metal case for use as power transistor Bridge Diode – also known as bridge rectifier…
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about 1 year ago - 281 comments
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